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An Encrypted File Deduplication Scheme with Permission in Cloud Storage

机译:云存储中具有权限的加密文件重复数据删除方案

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摘要

Encrypted file deduplication scheme (EFD) can improve its storage space utilization of cloud storage and protect the privacy of files in cloud storage. However, if an enterprise stores its files to cloud storage that has deployed an encrypted file deduplication scheme that does not support permission checking, this will destroy the permission of the enterprise files and bring some security problems. This seriously affects the practical value of EFD and prevents it from deploying in concrete cloud storage. To resolve this problem, we propose an encrypted file deduplication scheme with permission (EFDSP) and construct the EFDSP by using the hidden vector encryption (HVE). We have analyzed the security of EFDSP. The results have shown that EFDSP is secure and it can prevent the online deduplication oracle attack. We implement EFDSP and conduct the performance evaluation. The results show that the performance of EFDSP is little inferior to that of SADS, which is the only existing encrypted file deduplication scheme with permission, but the performance gap decreases with the increasing number of the authorized users and EFDSP has overcome the security weakness of SADS.
机译:加密文件重复数据删除方案(EFD)可以提高其对云存储的存储空间利用率,并保护云存储中文件的隐私。但是,如果企业将其文件存储到已部署了不支持权限检查的加密文件重复数据删除方案的云存储中,这将破坏企业文件的权限并带来一些安全问题。这严重影响了EFD的实用价值,并阻止了EFD在具体的云存储中的部署。为解决此问题,我们提出了一种具有权限的加密文件重复数据删除方案(EFDSP),并使用隐藏矢量加密(HVE)构造了EFDSP。我们已经分析了EFDSP的安全性。结果表明,EFDSP是安全的,并且可以防止联机重复数据删除Oracle攻击。我们实施EFDSP并进行性能评估。结果表明,EFDSP的性能不亚于SADS,后者是现有的唯一具有许可权的加密文件重复数据删除方案,但是性能差距随着授权用户数量的增加而减小,并且EFDSP克服了SADS的安全性弱点。

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  • 来源
    《Mathematical Problems in Engineering》 |2018年第15期|6091807.1-6091807.13|共13页
  • 作者单位

    Hunan Inst Engn Sch Comp & Commun Xiangtan 411104 Hunan Peoples R China;

    Guangzhou Univ Sch Comp Sci & Educ Software Guangzhou 510006 Guangdong Peoples R China;

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